| Abbreviation | Definition |
|---|---|
| USDA | Under Secretary of Defense for Acquisition |
| USDELMC | United States Delegation to The NATO Military Committee |
| USDIA | United States Defense Intelligence Agency |
| USDOE | United States Department of Energy |
| USDOI | United States Department of the Interior |
| USDON | United States Department of the Navy |
| USDR | United States Defense Representative |
| USEC | Unit Sustainability Education Coordinator |
| USEF | United States Elite Force |
| USELEMCMOC | United States Element Cheyenne Mountain Operations Center |
| USELEMNORAD | United States Element, North American Aerospace Defense Command |
| USERID | User Identification |
| USEUCOM | United States European Command |
| USF | United Special Forces |
| USF | United States Forces |
| USF | Urban Special Forces |
| USFA | Union Sportive des Forces Armées |
| USFE | Upper Stage Flight Experiment |
| USFF | U S Fleet Forces |
| USFF | United States Freedom Fighters |